Continuous pickling and tinning apparatus.



PATENTED JULY 14; 1908.

H. J. SCANLON. CONTINUOUS PIGKLING AND TINNING APPARATUS.

- A PLI ATION FILED APR.19 1905.

P G z SHEETS-SHEET 1.

No. 893,383. PATENTED JULY 14, 1908. H. J. SGANLON. PIGKLING AND TINNING APPARATUS. APPLICATION FILED APR.19,1905.

CONTINUOUS w M W M 5 mm .A Al

WITNESSES UNITED srarns in HUGH .T. SCANLON, OF MCKEESPORT, PENNSYLVANIA,ASSIG NOR TO AMERICAN SHEET & TIN

PLATE COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

CONTINUOUS PICKLING AND TINNING- APPARATUS. v

Specification of Letters Patent.

Patented 'July 1.4, 1908.

Application filed Apri1.19, 1905. I Serial No. 25$,09.

To all whom it may concern:

Be it known that I, HUGH J. SCANLON, of McKeesport, Allegheny county, Pennsylvania, have invented a new and useful Continuous Pickling and Tinning Apparatus, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a top plan view showing one form of my improved apparatus; and Fig. 2 is a vertical longitudinal section of the same.

My invention relates to apparatus for continuously pickling and tinning sheets of metal without the use of hand operators.

Heretofore in the practical operation of coating metal, considerable hand labor has been necessary in connection with the pickling and coating operations.

The object of my invention is to do away with hand labor and provide means for continuously pickling and coating sheets of metal.

In the drawings,.in which I show a preferred form of my apparatus, 2 represents the pickling vat, which may be of any desirable form, and 3 is a feeding device consisting of a shaft having several series of projecting radial arms 4 secured to rings or collars 5 on the shaft. The arms force the plates down and through the bath between the two sets of guides 6 and 6. Each set of guides preferably consists of rods spaced between push-arms of the shaft and extending across the pickling vat at separated points. The guides are so arranged relatively to the feeder-arms that the sheets will be pushed successively down into the pickling bath and thence upwardly through its other portion. Above the feed-out ends of the guides are placed feedeout and wiper-rolls, which may be of any desirable construction. I prefer, however, to arrange them in three sets as follows :The lower set 7, 7 are preferably rubber rolls, whichact to squeeze the liquor from the sheet. These rolls are preferably driven at the same speed as that of the rising sheet and are provided with ordinary adjusting screws to adjust the squeezing action. Above the roll 7, a second set of rolls Sin line therewith are driven at ahigher peripheral speed than the rolls 7. This may be done either by making the rolls 8 of larger diame ter or by arranging their driving connections to drive them faster. The rolls 8 are preferably formed of longitudinal rubber st i s secured close together upon a cylindrica base of wood, or any suitable material. Springs 8 are preferably provided between the end bearings of these two rolls, the bearings also being provided with adjustin screws. Owing to the speed of these rolls being higher than that of the metal passing through, they will produce a scraping and cleanin action which will remove any dirt or scale le t on the plate, and also assist in removing any mois ture which might remain. Above the rolls 8 I employ a set of rolls 9, which are the same character as the rolls 7. These rolls 9 hold back the plate in the rolls 8 after it has left the rolls 7 and compel the rolls 8 to exercise their scraping action on all parts of the plate.

The rolls 9 feed the plate upwardly within the backwardly curved guide 10. This guide consists of a series of bars or strips which are reversely bent leaving open mouths at their bottom ends. They are inclined backwardly or over the bath so that after the sheet has been fed up within them it will slide back and drop down the chute 11. This chute is preferably in rack or skeleton form, as shown in Fig. 1, and Water is preferably sprayed upon the sheets by a spray-pipe 11 located over the chute. This water serves to wash away any remaining traces of acid or pickle liquor, and thus better prepare the sheets for the coating operation. It also prevents oxidation of the surface of the sheets. The spraypipe may or may not be used, as desired, and I do not intend to limit myself thereto in my broader claims. As the sheets slide down the chute 11 they enter the inclined set of feed-rollers 12 which are within the flux box or chamber 13 of the tinning pot 14, one or both of these rollers preferably turning with' .mng rolls ning pot into; the metal side in which thetinmay be arranged in the ordinary manner. I have shown the tinning rolls as driven from a worm-gear driving-head in the usual manner.

The different rolls and the pickle-bath feeder may be driven by any desirable 'connections. ;In the form shown, a s rocketchain 19 leads from a sprocket-whee on the down to one of the rolls 18 to drive these rolls which are geared together at opposite ends, as shown in Fig. 1. The rolls 12 are also similarly geared together as shown in this figure. At the end of one of the rollers 9 opposlte to the s rocket-wheel end a large toothed wheel 26 lntermeshes with a similar toothed wheel 27 on the shaft of one of. the rolls 8. These two rollers are geared together at their ends opposite to the wheel 27 so that they are rotated simultaneously at a "higher speed than the rolls 9. 4 The smaller toothed Wheel 27 upon the shaft of one of the rolls. 8- drive a larger toothed wheel on the shaft of one of the rollers 7 whichshaft is' geared to the other roller at the opposite end,

thus driving both of these rollers 7. On the end of the left-hand roller 7 is a toothed wheel 28, which intermeshes with an idler wheel 29 rotating loosely on the shaft of the other roll 7, and intermeshing with a large driving gear wheel 30 secured to the shaft 31 of the feeding device for the pickling bath.

32 are conveyer rolls, 33 are the bottom rolls of the tin machine, and 34 are the upper sets of tinning r-olls mounted in the usual housings 35.

The preferred level of the tin bath is shown by the dotted line a-d of Fig. 2..

In the operation of the device, the sheets are fed singly and successively either by I hand or otherwise betweenthe spokes'or arms 'of the feeder wheel 3. The feeder forces v these sheets successively through the pickling bath; and as they rise the liquor is squeezed off by one set ofrolls and the next setrunning at a higher speed scra es and cleans the surfaces of the sheet'w 'le further assisting in removing the liquor. The

sheets are then forced up by the upper feed rolls into the reverse inclined guide, and

thence slide back-down the chute into the flux-box rollers, b which they are fed into the'lower feed-rollers on the flux side, and thenceinto the ordinary tinning rolls which feed the sheets up out of the pot.

seass-s p 7 machine; substantiallyias described.

The advantages of -my invention result 7 from the reduction of'hand labor, in the pic'- kling' and tinning operations; the operation,

of the machine is. rapid, the picklin is uniform on the successivefsheets, and the labor cost is reduced.

arrangement ,of t e .picklin bath, the tinning pot, the feeding means, -c., without departing from my invention. claim:- 1

1. The combination with a'pickling bath and a tinning machine, of means for feeding- Many variations mag "be made in the form and sheets downwardly and thence upwardly through the pickling bath,and means for feeding the sheets rear and foremost into the tinning bath; substantially as described.

2. A tinnin machine having a flux com partment, fee rolls the upper part of the flux compartment above the level of the tin, and arranged to rotate within the flux bath, a pickling bath adjacent to the tinning machine, and intermediate feed mechanism arranged to feed the sheets. rear end foremost from the ickling bath intdth'e flux rolls; substantially as described.

3. In pickling and tinning aplpraratus, the combination with atinning mac e, of apickling bath, means for feeding the sheets therethrough, rolls arranged to carry the sheets upwardly as they emerge from the bath, and an inclined chute for delivering the sheets to the tinning machine, said chute being arranged to receive the sheets from said rolls and feed them rear end foremost to the tinning machine; substantially as described.

4. In pickling and tinning ap aratus, the

combination with a pickling bat and a tin- .ning machine, of a combined feed-out and wiping device intermediate of the picklingbath and tinning machine, said device comprisin three sets of rolls, .the middleset havmg a igher peripheral speed than the adja cent sets; substantially as described. 5. In pickling and tinning ap aratus, the combination with a pickling bat and a tinning machine, of a combined feed-out and w1p1ng deviceintermediate of the pickling bath and tinning machine, said device comprisin three sets of rolls, the middle set having a igher peripheral speedthan the adjacent sets, and also having peripheral wiping devices; substantially as descri ed.

6. In continuous pickling and tinnin aparatus, the combination with a pic ing bath, of a feed-out device therefor, comprising a plurality of sets of rolls, an intermediate set of which has a higher peripheral speed than the other sets, means for" forcing said rolls with a yielding pressure against the sheet as it passes through a tinning machine and means for delivering the sheets from said feeding-out device to the tinning through the pickling bath, feed-out means for sa1d bath, consisting of upper and lower sets of rolls of yielding material, wiper rolls intermediate of the upper and lower rolls and having a greater peripheral speed, a

tinning machine, and means for automatically machine, of means for Feeding the sheetsv delivering the sheets from said rolls into the 10 tinningmachine; substantially as described.

In testimony whereof, I have hereunto set my hand.

HUGH J. SOANLON. A

Witnesses JOHN MILLER, H. M. CORWIN. 

